| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electrical equipment which dispenses with a charging circuit that charges a back-up storage battery with a main power supply cell. <P>SOLUTION: The electrical equipment provided with load, for example a power supply 8 that supplies an electric power to an imaging means 9, and a back-up storage battery 1 is provided with a solar cell 4 that charges the storage battery 1, a switch 3 that turns on/off between the solar cell 4 and storage battery 1, and a control unit 7 that detects an output voltage of the solar cell 4, and controls the turning on/off of the switch 3 in response to the detected output voltage. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
